Boring device.



PATENTED DEC. 17, 1907. J. .W. CONE & P. R. MILLER.

BORING DEVICE. APPLIOATION FILED PEB.2G. 1907.

2 SHEETS-SHEET 1.

a r i Q 06' WITNESSES u A TTOIYNEVS No. 873 724. PATENTED DEC. 17. 1307. J. W. GONE & F. R. MILLER. BORING DEVICE.

APPLICATION FILED TERM), 1907.

A 7'TOHNF Y S 45 to allow the forks 1.1 and 12 to ass'when the carriageis sliding near the en frames, and.

36 when the link 33 is moved toward the left by the lever. In this connection it should be understood that the slot 34 is sufficiently long to enable the dog to strike the collar in the manner suggested. I provide a movable clamping bar 42 which slides freely through the end frame 2 and is rigidly attached to the cross head 31 by means of a suitable set bolt 43. i

The mode of operation of the device will now be described: The boring bit or anger 17 having been mounted in the tool, the device is brought into position between the two beams where it is to be attached. It is then moved toward the left so as to engage the points 27 and the side face of the left-hand beam, and the lever 39' is then operated so as to move the cross'head 31 toward the right; in doing so the clamping bar 42 slides toward the right, and its point 44 engages with the face of the right-hand beam. As the cross head advances, the collar 36 slides along on the clamping bar -26; but after the lever is released, this collar 36 locks the cross head against a rearward movement. This is effected; by the pressure ofthe spring 37, as will be readily understood. 'i he bracket 10 is then adjusted to the proper height, and the hole is bored in the beam. In this connection it should be understood that'thecarriage and the bars 4 advance freely as the hole is being- 33 toward the left.

bored, so that a proper feeding movement is given to the boring tool,

When it is desired to remove the device,

the lever 39 is moved so as to move the link this link'does not impart an movement to the cross head 31, but simpi brings about engagement of the dog 41 with the collar 36. 'ilns releases the cross head from the bar 26, and a further movement of the link then advances the cross head toward the left so as to disengage the point 44 from the righthand beam. The V -shaped notches or depressions 3 in the end frames are intended in this connection attention is called to the fact; that the key 9 holds the bracket 10 in proper alinement andprevents the bracket from rotating when the auger is being driven.-

Having' thus described our invention, we

claim as new and desire to secure by Letters Patent:'

. 'eu i frames, means --for mounting a tool on sa1d'carr1age,-means for driying saidxtool, A

lclamping .b'ar guided through the op 'o site' ing bar,.a lever for advancing saidcross head,- I 65.

1. In a device .of the classdes'cribed, in cpgnbmation, end frames,{'a.carnage, means to; mounting s a1dcarr 1ag'e to slide on said members-carried by on'e-ofsaid and frames and adapted to engage the face of a beam, a

end frame, a cross head carryingsaidc ampmeans forlocking saidcross head against a The first movement of.

to said guide. bars, means.

return movement, and means for releasing said locking means by a reverse movement of said lever. I

v 2. 'In a device of the class described, in combination, end frames, a carriage, means for mounting said carriage to slide between said end frames, means for mounting atool on said carriage, means carried by one of said end frames for en aging'the face of a beam, clampin bars sli ably mounted in theopposite end. ame, a cross head slidably mounted between'said end frames and carrying said clamping bars, alever having a slot connection with said cross head and adapted to advance said cross head to operatesaid clampingbars, a clutch carried by said cross clampingbars connecting said end ames and having points (projecting-beyond one of said end frames an ada ted to engage the face of a beam, a cross heacfslidably mounted on one of said clampingbars, a movable clamping bar carried by said cross head sliding through" one of said end frames, a clutch on said cross head enga 'ng the clamping bar onwhich said crossgi'ead slides and affordingmeans for locking said cross head when advanced means for advancing said cross head, and means for disengaging said clutch by a reverse movement of said clamping means.

'4. In a device 'of theclass described, in combination, an .end frame, a second and frame, 'de bars slidably mounted'throug'h said on frames, a carriage'rigidly attached 'or mounting a tool in said carriage, means for driving sald tool,

'a clamping baiconnecting said end frames and having a, point pro first end frame, a secon clamping bar con- 1 v ecting beyond said necting said endframes andh a oint as P projecting beyond said' first e ame, a guide bar ad'acent 'to said second clampin bar, a cross. cad slidably'mounted on sai last guide bar-and saidsecond clamping bar ,a. movable clamp" bar i 'dlyattache ,to said crosshea d and. slid a bly mounted through said second end frame, a clutch car-' ried by said cross'head and cooperating with head after advanc'ement, a link having a slot said'second clamping bar to clamp said cross connection, with said cross head, a lever mounted on said second end frame 'and,co'n .nected with said link to advance said crossf head, and a dog carried by said link. gfn'd; .adapted to engage-said clutch to rl'ease tlie same by a; reverse movement of said lever.

5. In a device of the class-describednn combination, end frames, guide bars slidably mounted therethrough, a carriage rigidlyattached to said guide bars and presenting a hub, a sleeve slidably mounted in said hub, means for locking said sleeve in said hub against rotati0n,'1neans for adjusting said sleeve in said hub, a bracket carried rigidly by said sleeve, and means for supporting atool in said bracket.

6. In a device of the class described, in combination, end frames, guide bars slidably mounted therethrough, a carriage rigidly attached to said guide bars and presenting ahub, a sleeve slidably mounted in said hub, means for locking said sleeve in said hub againstrotation, means for adjusting said sleeve in said hub, a bracket carried rigidly by said sleeve, means for supporting a tool in said bracket, a spindle passing upwardly through said sleeve, a chuck mounted in said bracket, and means for driving said chuck from said spindle.

in testimony whereof We have signed our names to this specification in the presence of two subscribing witnesses. JOHN W. CONE.

FORREST RMMILLER.

Witnesses:

SAMUEL D. THOMAS,

ll. R. SMITH. 

